Image data processing apparatus

Details Image data processing apparatus Image data processing apparatus

1997-02-18

1998-12-22

Rogers, Scott

Image analysis

Image segmentation

382176, 382254, 358462, 358464, 358465, G06K 934, G06T 500, H04N 1403

Patent

active

058526773

ABSTRACT:
An image data processing apparatus is provided which is capable of properly reproducing an input image by performing a simple and short-time process in accordance with the density and type of the input image. If the minimum value of inputted image data is not higher than a first threshold, the minimum value of the inputted image data is adopted as a minimum input value to be inputted to an image outputting apparatus. If the minimum value of the inputted image data is higher than the first threshold, a lower limit input image data value is adopted as the minimum input value. Further, if the maximum value of the inputted image data is not lower than a second threshold which is higher than the first threshold, the maximum value of the inputted image data is adopted as a maximum input value to be inputted to the image outputting apparatus. If the maximum value of the inputted image data is lower than the second threshold, an upper limit input image data value is adopted as the maximum input value. Thus, the inputted image is corrected so that inputted image data within a range between the minimum input value and the maximum input value correspond to data within a range between a lower limit value and an upper limit value for input to the image outputting apparatus.

REFERENCES:
patent: 4972501 (1990-11-01), Horyu
patent: 5280546 (1994-01-01), Mahida et al.

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